Centering-gage.



V. T. WYCISLO- CENTERXNG GAGE. APPLICATION FILED MM. 22. ms.

Patemfid D60. 11, 1917.

van in. wrcis'Lofor cnrcaeo, ILLINOIS.

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To all whomz't may concern." a

Be it known that I, VAN T. WyoisLo, a

citizen of the United, States, and resident of races or spline grooves in material vary- 111g shapes.

The main and primary object of the present invention is the provision of a centering gage having but a minimum number of parts, the relation of which is such that the gage may be expeditiously applied to and removed from a tool while the latter is in the machine, and when so applied will afford such a presentation to the tool of the work to be centered as to preclude necessityyof any measurement to determine the accuracy of such centering. i a The invention further aims toprovide a V 1 centering gage having provision to adapt the same for use with various sizes of stock and means to enable its speedy adjustment for application thereto in accordance with the dimensions of the particular piece to be centered. i

Furthermore, the invention also seeks to provide a gage of this nature, the construction of which is suchas to permitits use for straight-line measurement,

With these general objects in view, and others which will appear as the nature of the improvementis better understood, the invention consists substantially in the novel construction, combination and arrangement of parts hereinafterifully described, illustrated in the accompanying drawings, and finally pointed out intheappended claims. In the drawings, y 7 Figurel is a side elevation of a centering gage constructed in accordance with the present invention'and shown as applied to a drill,-the view also illustrating the. manner in which the stock is centered by the gage with respect to the drill; V y i Fig. 2 is a sectional plan view onthe line 2-2 ofyFig. 1.;

. Fi s 3 a er i a ee enelvie th Specificationof Letters Patent.

gage taken on a line approximately midway of the gage members.

Referring in detail to the accompanying drawings, the numerals 1 and 2 designate the members of the herein described gage. Each of these members includes a vertically extending shank 8, which shanks lie substam tially parallel to each other so that the same may readily embrace the tool to which the centerlnggage is applied. The inner opposing faces of these shanks 3 are plane, and

eachis provided with a vertically extending groove 4 in which the tool to which;.the gage 1s applied is seated. The shanks 3, therefore, embrace the tool and theparallel relation of the members is thereby assured.

, Patented Dec... ll, 19W. Application filedMarch 22, 1916. Serial No. 85,772.

Obviously, the groovesd extend throughout i the length of the inner faces of the shanks 3. At the lower end of each of theshanks 31s arranged an angularly-disposed contact finger 5, these fingers, when the members are assembled, extending in divergent or flaring. relation with respect to eachother at an angle of ninety degrees. This relation of the fingers 5 so positions them with ing faces of the fingers 5 are disposed in angular relation to thetool-engaging faces respect to the Work to be centered that the of the shanks 3, so that in the assembled re lation of the members 1' and 2 the tool-en- 'gagingfaces lie parallelpandthe Work-en.-

gaging faces extend in divergent relation wlth respect to the tool-engaging faces.

Mounted on the member 1 and extending "at right angles to theshank3 thereof, i sia supporting arm 6, which arm is connected to the member 1 through the medium of a screw 7,0r its equivalent. Thesupporting arm 6 fits within and is received by an elongated guide loop 8, carried by the shanlc3 of the member 2. The supportingarm 6 is provided with an elongated slot 9 to receive a clamping bolt 10, the head of which is seated in a countersink 11 formed in the shank of the member 2, and the'screw threaded end ofsaid bolt passes through the guide loop 8 and hasmounted thereon a winged nut 12 by which pressure maybe exerted on the parts to hold the shanks 3 in adjusted relation with respect to eachother.

In order that the supporting arm" 6 mayv bet-held at right angles to the shank of the member 1, said shank is providedwith a the arm 6, and when the latter isfastened 5 to the member 1 by the screw 7 said arm will beheld in rigid relation to the mem- 7 The supporting arm--6 is also provided withgraduations 14, based upon'proper "scale measurements,whereby to determine with ease the extent of movement of the jaws of the members 1 and 2 ,with'respect to -each other,thereby to facilitate application of the gage'to known sizes of drills or "other tools'with which the-same is to be used. In using the present invention, the nut 12 "-is loosened to relieve the pressure on the supporting arm -6,' whereupon the members 11 and :2 may be readilyseparated or moved 'a-way froni-each other the required distance to permit application ofzthe gage to the tool. If thelatter be a drill, as illustrated inFig 1 of the drawing, the members are arranged at opposite sides of the same and pushed together, thedrill seating itself in the vertical. grooves a. The nut 12 is now tightened, thereby binding the parts, and this effectually holds the members 1 and Q "2 onthe drill. The point of the drill is, of '0 course, permitted to project the requiredextent below the lower ends of theslianks 3. The work' is now presented to the tool and brought into contact with the inner face of 'eae'hof the contact. fingers 5,as illustrated in Fig. '1 and with the gage rigidly held on the tool it iso'bvious that when this contact with the fingers 5 is'made, and the stock'is incapable of any lateral movement with resp e'ct tothe' gage, thework becomes centered beneath the tool; The gage is then removed from the tool, and if this be a drill the opening orhole is b'ored'to the required extent; the drill removed from the work, the latterfmoved to a new position beneath the drill, whereupon the gagemay be again applied to the drill and the work centered in the manner just described. I Asshown in the drawings the work or stock is of cylindricalfshape, as a shaft. If "it were desired tolforin in the shaft key races or spline grooves, it is evident that the gage would'be applied to the milling cutter in the same manner as applied to a Idrill} Should'the work or stock have any square-bar, it would also be seen that the same method of centering would'be followed in such particular. The corners ofthe bar would be brought intocontact with the innerfaces, 0f the fingers 5, and when so contactedjwith thesefingers the hair would be centered with respect to the tool which is to operate thereon.

' 'As the contact fingers 5 are arranged at 'an' angle of ninety degrees to each other, it

will be seen that when the shanks 3 are closed together and brought into contact the inner faces of the fingers 5 are at right angles to each other. In this relation the gage may be used for straight-line measurement, and likewise for determining the accuracy of right angles.

It will be understood that the invention may be used also for centering the ends of stock. Such use contemplates only the different presentation of the work, the gage being applied to the tool in the same manner as when the side of the-stock is presented.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent is:

1 A centering gage, comprising a plurality of relatlvely-ad ustable members inicludiiig tool-embracing elements, work-contacting elements carried by said members for centering the work with respect to the tool embraced by the members, and means for effecting relative adjustment of the members.

2 A centering gage, comprising a pinrality of relatively ad ustable members iiichiding substantially parallel tool-embracing elements, work-contacting elements carried by said members for centering the work with respect to the tool embraced by the members, said work-contacting elements being disposed in angular relation to the toolembracing elements, and means for effect-- ing relative adjustment of the members.

I 3. A centering gage, comprising a plurality of members provided with parallel shanks for embracing a tool, a contact finger carried by each shank and disposed at an angle thereto, whereby'said fingers extend in divergent relation to said shanks, and means for effecting relative adjustment of the members.

4. A centering gage, comprising a plurality of members provided with parallel shanks for embracing a tool, the inner faces of said shanks having grooves for the re ception of said tool, a contact linger carried .by each shank and disposed at an angle thereto, whereby said fingers extend in diparallel tool-embracing elements, work-con- 1 tacting elements carried by said members for centering the work with respect to the tool embraced by the members, a supporting arm carried by one of the tool-embracing elements and extending at right angles thereto, said arm having a slidable connection with the other member, and means for holding the latter in adjusted position on said arm.

7 A centering gage,-co mprising a plurahty of members includlng substantlally parallel tool-embracing elements, work-contacting elements carried by said members for centering the work with respect to the tool embraced by the members, said workcontacting elements being divergently arranged with respect to each other, a supporting arm carried by one of the toolembracing elements, the other tool-embracing element having a slidable connection with said arm, and means for locking the members in adjusted relation.

8. A centering gage, comprising a plurality of members including substantially parallel tool-embracing elements, work-contacting elements carried by said members and arranged in angular relation thereto for centering the work with respect to the tool embraced by the members, a supporting arm carried by one of said members and provided with an elongated slot, the other memher being slidably mounted upon said supporting arm, and clamping means extending through the slot of said supporting arm and the member carried by the latter, whereby to lock said member on said arm and hold the members in adjusted relation to each other.

9. A centering gage, comprising a plurality of members including substantially parallel tool-embracing shanks, a .contact finger carried by each of said shanks, said fingers being arranged in divergent relation to each other, where-by to contact thework and center the latter with respect to the tool embraced by said shanks, a supporting arm carried by the shank of one of said members, the shank of the other member being slidably mounted on said arm, and means for locking the members in adjusted relation finger carried by each of said shanks, said.

fingers being arranged in divergent relation to each other, whereby to center the work with respect to the tool embraced by the shanks, a supporting arm carried by the shank of one of said members and extending at right angles thereto, said arm being pro vided with an elongated slot, the shank of the other member being slidably mounted on said arm, and a clamping bolt passing through the slot of said supporting arm and the shank of the member supported by said arm for binding said member on the supporting arm and holding the members in adjusted relation with respect to each other.

11. A centering gage, comprising a plurality of members adapted to embrace a tool and having parallel tool-engaging faces, a contact finger carried by each member and having a work-engaging face disposed at an angle to the tool-engaging face thereof, the work-engaging faces of said members extending in divergent relation with respect to each other when said members are assembled, and means for effecting relative adjustment of the members. 7 12. A. centering gage, comprising a pluralityof members each of which is provided with a tool-engaging face and a work-engaging face disposed in angular relation to each other, the tool-engaging faces lying parallel and the Work-engaging faces extending in divergent relation with respect to the tool-engaging faces when said members are assembled, and means for effecting relative adjustment of the members.

Signed at Chicago, Illinois, this 18th day of March, 1916.

VAN T. VVYCISLO.

Witnesses:

FRANK WERo, ANNA E. BEUTLER.

Copies of this patent may be obtained for five cents eacfu-by addressing the Commissioner of Patents,

Washington, D. 0. 

